123781052 has 12 divisors (see below), whose sum is σ = 216716136. Its totient is φ = 61862160.

The previous prime is 123781037. The next prime is 123781061. The reversal of 123781052 is 250187321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5027 + ... + 16517.

It is an arithmetic number, because the mean of its divisors is an integer number (18059678).

Almost surely, 2^123781052 is an apocalyptic number.

It is an amenable number.

123781052 is a deficient number, since it is larger than the sum of its proper divisors (92935084).

123781052 is a wasteful number, since it uses less digits than its factorization.

123781052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14188 (or 14186 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 123781052 is about 11125.6933267100. The cubic root of 123781052 is about 498.3694242257.

The spelling of 123781052 in words is "one hundred twenty-three million, seven hundred eighty-one thousand, fifty-two".